<html>
	<title>To understand how variables and constants used in PHP</title>
	<body>
		<?php
			$name = 'vinoth';
			$address1 = 'gangai nagar';
			$address2 = 'velachery';
			$city = 'chennai';
			$pincode = '600042';
			define('COURSE', 'DIF233');
			echo "I am <i>Vinoth</i>";
			echo '<p>';
			echo "I live in <br />";
			echo "$address1 <br />$address2 <br />$city <br />$pincode <br />";
			echo '</p>';
			echo '<p>';
		        echo "I am studying PHP as part of course id:", COURSE, " in MSc Foss";
			
		        /*[Sun Oct 27 21:17:25 2013] [error] [client 127.0.0.1] PHP Parse error:  syntax error, unexpected '1' (T_LNUMBER), expecting variable (T_VARIABLE) or '$' in /var/www/dif233/ch1/variables_constants.php on line 18*/
		        //I received the above error message for the below definition
		        //$1_of_unacceptable_variable_name = "It will break";
		        
		?>
	</body>
</html>
